Let's Learn: Dissecting Lazarus Windows x86 Loader Involved in Crypto Trading App Distribution: "snowman" & ADVObfuscator

2019-10-17 Vkremez

https://web.archive.org/web/20210623122700/https://www.vkremez.com/2019/10/lets-learn-dissecting-lazarus-windows.html

The reverse-engineering post documents a Lazarus Windows x86 loader/backdoor delivered through the fake JMT Trading cryptocurrency application campaign. The signed JMTTrader_Win.msi installer dropped CrashReporter.exe, which executed with the “Maintain” argument and used a renamed ADVObfuscator library called “snowman” to complicate analysis. The malware collected host and process data, performed file and registry operations, encoded victim information, and communicated through multipart HTTP requests. The activity extends AppleJeus-style cryptocurrency targeting with Windows and macOS malware, a fake company website, GitHub releases, and code signing.

Indicators of Compromise

Type Value First Seen Last Seen
HASH 4d6078fc1ea6d3cd65c3ceabf659616… 2019-10-17 2021-02-18
HASH 07c38ca1e0370421f74c949507fc0d2… 2019-10-17 2021-02-18
HASH e352d6ea4da596abfdf51f617584611… 2019-10-17 2021-02-18
HASH 9bf8e8ac82b8f7c3707eb12e77f94cd… 2019-10-17 2021-02-18
URL https://www.jmttrading.org/ 2019-10-12 2020-01-01

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